<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../reactBag/react.development.js"></script>
    <script src="../reactBag/react-dom.development.js"></script>
    <script src="../reactBag/babel.min.js"></script>
    <script src="../reactBag/prop-types.js"></script>
</head>
<body>
    <div id="app"></div>

    <script type="text/babel">

        class App extends React.Component{
            state = {
                hobby : "打豆豆"
            }
            render() {
                const {hobby} = this.state;
                return <div>
                    
                            <h1>老父亲喜欢{hobby}</h1>
                            <Son hobby = {hobby}/>

                       </div>
            }
        }
        class Son extends React.Component{

            render() {
                // props是只读属性不能修改和添加
                let {hobby} = this.props;
                // 我们可以通过结构来的变量进行修改
                hobby = '吃饭'
                return <p>儿子也喜欢{hobby}</p>
            }

        }

        ReactDOM.createRoot(document.getElementById('app')).render(<App/>)

    </script>
</body>
</html>